CN105247831A - Flow table modifying method, flow table modifying device, and openflow network system - Google Patents
Flow table modifying method, flow table modifying device, and openflow network system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/026—Capturing of monitoring data using flow identification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/20—Arrangements for monitoring or testing data switching networks the monitoring system or the monitored elements being virtualised, abstracted or software-defined entities, e.g. SDN or NFV
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/38—Flow based routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/64—Routing or path finding of packets in data switching networks using an overlay routing layer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
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Abstract
Provided are a flow table modifying method, a flow table modifying device, and an OpenFlow network system. The method comprises the following steps: a switch receives a modify flow entry message transmitted by a controller; the switch searches a flow table corresponding to a flow table identifier for the presence or absence of a flow entry matching to-be-modified target information; and, if a flow entry matching the to-be-modified target information is present, the switch modifies a matching domain field of the matching flow entry to a new matching domain field. The method is low in information redundancy and high in efficiency and reduces interface load.
Description
Flow table amending method, flow table modification device and open flows network system technical field
The present invention relates to communication technical field, and in particular to a kind of flow table amending method, flow table modification device and open flows network system.Background technology is said
With the continuous development of network technology, software defined network is occurred in that（Software defined network, abbreviation SDN), open flows（OpenFl books ow, abbreviation OF) agreement is a kind of typical technology in SDN.Network element in OF agreements includes OF controllers（Controller), OF interchangers (switch), OF controller abbreviation controller, OF interchanger abbreviation interchangers.Controller is according to message characteristic, such as five-tuple, Ethernet frame head, VLAN（Virtual local area network, abbreviation VLAN) mark（Identification, abbreviation ID) etc., the forwarding behavior of the Business Stream is determined, such as forwarding, abandons, modification heading, encapsulation, decapsulation, and send the one or more actions for flowing regular and corresponding execution corresponding with the Business Stream to interchanger.The stream rule that interchanger is received and storage control is sent, the message for subsequently meeting stream rule performs the corresponding action of stream rule, so as to realize the forwarding or processing of message.
First, controller is by updating flow table list item message（Modify flow entry message, abbreviation Flow_Mod) send stream rule to interchanger.Stream rule includes stream matched rule and corresponding processing action.Stream matched rule can include Ethernet frame head, Internet Protocol（Internet protocol, abbreviation IP) header or transmission control protocol（Transmission control protocol, abbreviation TCP)/UDP（User date protocol, abbreviation UDP) information such as port numbers combination.Processing action includes the parameter for handling type and correlation, handle type such as forwarding, abandon, change, encapsulating, decapsulate.Controller may will belong to different flow tables by multiple renewal flow table list item message（Flow table) stream matched rule be sent to interchanger.Then, interchanger matches all streams received from controller
Regular and corresponding processing action storage is installed in flow table.Finally, when interchanger receives the message of user's transmission, interchanger performs flow table matching, and the message sent according to the regular corresponding behavior aggregate of stream of matching to user is handled.
OF agreements can flow regular increase/modification/deletion by updating flow table list item message and realizing.But, controller can only be by increasing or deleting the action of flow table, to complete the modification of flow table item.For example, the modification to a MAC Address, the flow table item of IP address needs to send two renewal flow table list item message.First, controller sends one to interchanger and more says new flow table list item message, carries and deletes instruction to delete a flow table item, matching domain is carried（Source IP address is equal to IP2, and source MAC is equal to MAC2).Then, controller, which sends one to interchanger and updates flow table list item, disappears book breath, carries increase and indicates to increase a new flow table item, the matching domain of new flow table item is carried（Source IP address is equal to IP3, and source MAC is equal to MAC3).N bar flow table items are changed, controller needs to send 2N bars renewal flow table list item message to interchanger, and every updates flow table list item message and carries complete matching（Match)/operation（Action) field.
In summary, method existence information redundancy, the shortcoming that efficiency is low, interface load is overweight of common modification flow table.The content of the invention
Technical problem
In view of this, the technical problem to be solved in the present invention is how to improve the efficiency of modification flow table, reduce interface load.
Solution
In order to solve the above-mentioned technical problem, in a first aspect, the invention provides a kind of flow table amending method, including：
Interchanger receives the renewal flow table list item message that controller is sent, and the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field；
The interchanger is searched whether to exist and treated with described in the flow table corresponding with flow table mark
Change the flow table item of target information matching；
In the case where there is the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as the new matching domain field by the interchanger.
With reference in a first aspect, in the first possible implementation of first aspect, the target information to be modified is flow table relating value；
The interchanger searches whether there is the flow table item matched with the target information to be modified, bag, which is said, to be included in the flow table corresponding with flow table mark：
The interchanger in the flow table, judge current lookup to flow table item in flow table relating value of the flow table relating value with receiving whether match；Book
If current lookup to flow table item in flow table relating value match with the flow table relating value that receives, by the current lookup to flow table item be defined as the flow table item of the matching.
With reference in a first aspect, in second of possible implementation of first aspect, the target information to be modified is old matching domain field；
The interchanger searches whether there is the flow table item matched with the target information to be modified in the flow table corresponding with flow table mark, including：
The interchanger in the flow table, judge current lookup to flow table item in matching domain field whether matched with the old matching domain field；
If current lookup to flow table item in matching domain field match with the old matching domain field, by the current lookup to flow table item be defined as the flow table item of the matching.
With reference to second of possible implementation of the first possible implementation or first aspect of first aspect or first aspect, in the third possible implementation of first aspect, in the case of in the absence of the flow table item matched with the target information to be modified, the interchanger sends mistake to the controller and indicated, the mistake indicates to be used to notify the controller flow table modification failure.
Second aspect, the invention provides a kind of flow table amending method, including：
Controller is sent to interchanger updates flow table list item message, and the renewal flow table list item message includes
Flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.
With reference to second aspect, in the first possible implementation of second aspect, the target information to be modified is flow table relating value or old matching domain field.
The first possible implementation is said with reference to second aspect or second aspect, in second of possible implementation of second aspect, the controller receives the mistake instruction that the interchanger is sent, and the mistake indicates to be used to notify the controller flow table modification unsuccessfully book.
The third aspect, device is changed the invention provides a kind of flow table, including：
Receiving module, the renewal flow table list item message for receiving controller transmission, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field；
Searching modul, is connected with the receiving module, in the flow table corresponding with flow table mark, searching whether there is the flow table item matched with the target information to be modified that the receiving module is received；
Modified module, is connected with the searching modul, and in the case of being found in the searching modul in the presence of the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as into the new matching domain field.
With reference to the third aspect, in the first possible implementation of the third aspect, the target information to be modified is flow table relating value；The searching modul is configured as：
In the flow table, judge current lookup to flow table item in flow table relating value whether matched with the flow table relating value that the receiving module is received；
If it is determined that current lookup to flow table item in the flow table relating value that is received with the receiving module of flow table relating value match, by the current lookup to flow table item be defined as the flow table item of the matching.
With reference to the third aspect, in second of possible implementation of the third aspect, the target information to be modified is old matching domain field；The searching modul is configured as：
In the flow table, judge current lookup to flow table item in matching domain field whether matched with the old matching domain field that the receiving module is received；
If it is determined that current lookup to flow table item in matching domain field match with the old matching domain field that the receiving module is received, by the current lookup to flow table item be defined as the flow table item of the matching.Say
With reference to second of possible implementation of the first possible implementation or the third aspect of the third aspect or the third aspect, in the possible implementation of the third book of the third aspect, the flow table modification device also includes：
Sending module, it is connected with the searching modul, in the case of being found in the searching modul in the absence of the flow table item matched with the target information to be modified, send mistake to the controller and indicate, the mistake indicates to be used to notify the controller flow table modification failure.
Fourth aspect, device is changed the invention provides a kind of flow table, including：
Sending module, flow table list item message is updated for being sent to interchanger, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.
With reference to fourth aspect, in the first possible implementation of fourth aspect, the target information to be modified is flow table relating value or old matching domain field.
With reference to the first possible implementation of fourth aspect or fourth aspect, in second of possible implementation of fourth aspect, the flow table modification device also includes：
Receiving module, is indicated for receiving the mistake that the interchanger is sent, and the mistake indicates to be used to notify the flow table modification device flow table modification failure.
5th aspect, the invention provides a kind of open flows network system, including：Interchanger and controller;Flow table modification device of the interchanger using the first possible implementation of the third aspect or the third aspect into the third possible implementation of the third aspect in any possible implementation；The controller is using the flow table modification device in any possible implementation in second of possible implementation of fourth aspect or the first possible implementation or fourth aspect of fourth aspect.
Beneficial effect
The flow table amending method, stream of the present embodiment say table modification device and open flows network system, interchanger is by receiving the renewal flow table list item message that controller is sent, the flow table item matched with target information to be modified is searched in the flow table corresponding with flow table mark, and the matching domain field for the flow table item for matching book is revised as new matching domain field, changes the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, further feature and aspect of the invention will be clear.Brief description of the drawings
Comprising in the description and constituting accompanying drawing and the specification of a part of specification and together illustrate exemplary embodiment, feature and the aspect of the present invention, and for explaining the principle of the present invention.
Fig. 1 is the flow chart of the flow table amending method according to the embodiment of the present invention one；
Fig. 2 is the flow chart of the flow table amending method according to the embodiment of the present invention two；
Fig. 3 is the flow chart of the flow table amending method according to the embodiment of the present invention three；
Fig. 4 a are a kind of structured flowchart that device is changed according to the flow table of the embodiment of the present invention four；
Fig. 4 b are another structured flowchart that device is changed according to the flow table of the embodiment of the present invention four；Fig. 5 is the structured flowchart that device is changed according to the flow table of the embodiment of the present invention five；
Fig. 6 is the structured flowchart that device is changed according to the flow table of the embodiment of the present invention six；
Fig. 7 is the structured flowchart that device is changed according to the flow table of the embodiment of the present invention seven；And
Fig. 8 is the structured flowchart of the open flows network system according to the embodiment of the present invention eight.Embodiment
Describe various exemplary embodiments, feature and the aspect of the present invention in detail below with reference to accompanying drawing.Identical reference represents the same or analogous element of function in accompanying drawing.Although the various aspects of embodiment are shown in the drawings, unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary " illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the present invention, numerous details are given in the embodiment of lower book text.It will be appreciated by those skilled in the art that without some details, the present invention can equally be implemented.In other example, it is not described in detail for method well known to those skilled in the art, means, element and circuit, in order to highlight the purport of the present invention.
As described in background technology and the content of the invention, OF network systems include controller and interchanger, and controller uses open stream protocol, by updating flow table list item message to interchanger transmission flow table, the flow table that interchanger is received and storage control is sent.The flow table item (flow entry) that the message of all process interchangers can all be stored with interchanger is matched.In current OF agreements, interchanger can support multiple flow tables, and each flow table includes several flow table items, and each flow table item includes matching field, counter（Statistics) and operation.Matching domain in the flow table item for first flow table that message is stored with interchanger is matched, in the case of certain list item of data packet matched to first flow table, then perform the operation in above-mentioned flow table item, if the operation in the flow table item of matching includes jumping to next flow table again, next flow table matching flow table item is then gone to after other operations have been performed, if the operation in the flow table item of matching does not include jumping to next flow table, then flow table matching terminates, and performs the behavior aggregate corresponding to the message（Action set), data are for example forwarded a packet into appointed output terminal mouthful, packet discard, modification packet is first-class.
In the embodiment of the present invention, controller can control the flow table that interchanger is stored by changing flow table item.
Embodiment 1
Fig. 1 is the flow chart of the flow table amending method according to the embodiment of the present invention one.As shown in figure 1, the flow table amending method mainly includes：
Step S110, interchanger receive the renewal flow table list item message that controller is sent, and the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field.
Specifically, if interchanger receives the renewal flow table list item message of controller transmission, interchanger can put in a good word for the flow table that target information to be modified is specified and be handled accordingly.Update flow table list item message except being identified including flow table, target information to be modified and new matching domain field, should also include action type.Action type is except that including deleting and increasing, can also include book modification.Interchanger can identify the flow table for determining to need to change according to flow table, further determined to need the flow table item of modification in the flow table that the needs are changed according to target information to be modified, the flow table item for needing modification is the flow table item matched with target information to be modified, and the matching domain field in the flow table item changed will be needed to be revised as new matching domain field.
Step S130, the interchanger search whether there is the flow table item matched with the target information to be modified in the flow table corresponding with flow table mark.
Specifically, interchanger can identify the flow table for determining to need to change, and search whether the flow table item that flow table item is matched with target message to be modified in the flow table that the needs are changed after controller receives renewal flow table list item message according to flow table.Target information to be modified can be flow table relating value, or old matching domain field.
In the case where target information to be modified is flow table relating value, interchanger searches whether there is the flow table item matched with target information to be modified, can included in the flow table corresponding with above-mentioned flow table mark：Interchanger in the flow table, judge current lookup to flow table item in flow table relating value of the flow table relating value with receiving whether match；If current lookup to flow table item in flow table relating value match with the flow table relating value that receives, by current lookup to flow table item be defined as the flow table item of matching.
Specifically, the target information to be modified updated in flow table list item message can be flow table relating value, but interchanger is storage flow table relating value, update outside the processing of flow table list item message not to flow table
Relating value carries out other processing.Interchanger is received from controller after flow table relating value, whether the flow table relating value that can be searched in the flow table item of itself storage matches with the flow table relating value currently received from controller, if the flow table relating value that interchanger is found in the flow table item of itself storage matches with the current flow table relating value received from controller, then interchanger can determine current lookup to itself storage flow table item in flow table relating value the match is successful with the current flow table relating value received from controller, interchanger can determine the flow table item that the flow table item that current lookup is arrived is matching.
In the case where target information to be modified says domain field for old matching, interchanger searches whether there is the flow table item matched with target information to be modified in the flow table corresponding with above-mentioned flow table mark, including：Interchanger in the flow table, judge current lookup to flow table book in matching domain field whether matched with the old matching domain field；If current lookup to flow table item in matching domain field match with the old matching domain field, by current lookup to flow table item be defined as matching flow table item.
Specifically, interchanger can search the flow table item for needing to change according to old matching domain field.Interchanger is received from controller after old matching domain field, whether the matching domain field that interchanger can be searched in the flow table item itself stored in the flow table corresponding with above-mentioned flow table mark matches with the old matching domain field, if the matching domain field that interchanger is found in the flow table item of itself storage matches with the old matching domain field, then interchanger can determine current lookup to itself storage flow table item in matching domain field and old matching domain fields match success, interchanger can determine the flow table item of flow table item that current lookup arrives for matching.
Step S150, in the case where there is the flow table item that is matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as the new matching domain field by the interchanger.
Specifically, after interchanger determines the flow table item of matching, it is possible to be revised as the matching domain field in the flow table item of matching to come into force immediately after the new matching domain field, flow table item self-modifying.
In contrast to existing flow table amending method, if modification N bar flow table items, interchanger needs to receive 2N bars renewal flow table list item message from controller, and the complete matching field of every renewal flow table list item message carrying or action field, information redundancy is high, and efficiency is low, and interface load is overweight.And the embodiment of the present invention
Flow table amending method, if modification N bar flow table items, the renewal flow table list item message at most N bars that interchanger is received from controller and alleviate interface load at efficiency high.In addition, the flow table amending method of the embodiment of the present invention, the mark only pair flow table item matched with target information to be modified is modified, information redundancy is low.
In a kind of possible implementation, in the case of in the absence of the flow table item matched with the target information to be modified, the interchanger sends mistake to the controller and indicated, the mistake indicates to be used to notify the controller flow table modification failure.
Specifically, if the flow table item matched with modification target message is not present in the flow table item that interchanger finds itself storage, interchanger can send mistake to controller and indicate.Mistake indicate can notification controller flow table modification failure not notification controller flow table book modification failure concrete reason, mistake is indicated can also the not only notification controller flow table modification failure concrete reason that the modification of notification controller flow table fails again.
The flow table amending method of the present embodiment, interchanger is by receiving the renewal flow table list item message that controller is sent, the flow table item matched with target information to be modified is searched in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.
Embodiment 2
Fig. 2 is the flow chart of the flow table amending method according to the embodiment of the present invention two.As shown in Fig. 2 the flow table amending method mainly includes：
Step S210, controller are sent to interchanger updates flow table list item message, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.
Specifically, controller can make interchanger change flow table item by sending renewal flow table list item message to interchanger.If interchanger receives the renewal flow table list item message of controller transmission, interchanger can be with
The flow table for determining to need to change is identified according to flow table, further determined to need the flow table item of modification in the flow table that the needs are changed according to target information to be modified, the flow table item for needing modification is the flow table item matched with target information to be modified, and the matching domain field in the flow table item changed will be needed to be revised as new matching domain field.Specific example may refer to the associated description of the step S110 in above-described embodiment one.Target information to be modified can be flow table relating value, or old matching domain field.
In the case where target information to be modified is flow table relating value, interchanger can be in the flow table corresponding with above-mentioned flow table mark, search whether the flow table relating value in the flow table item sent before the controller that itself storage is said matches with the flow table relating value of current controller transmission, if the flow table relating value that the flow table association book value before the controller that interchanger finds itself storage in the flow table item that sends is sent with current controller matches, then interchanger can determine current lookup to flow table item in the flow table relating value that sends of flow table relating value and current controller the match is successful, interchanger can determine the flow table item that the flow table item that current lookup is arrived is matching, just the matching domain field in the flow table item of matching can be revised as new matching domain field.Specific example may refer to the associated description of step S130 and step S150 in above-described embodiment one.
In the case where target information to be modified is old matching domain field, in the flow table that interchanger can be corresponding with above-mentioned flow table mark, whether the matching domain field searched in the flow table item of itself storage matches with the old matching domain field, if the matching domain field that interchanger is found in the flow table item of itself storage matches with the old matching domain field, then interchanger can determine current lookup to itself storage flow table item in matching domain field and old matching domain fields match success, interchanger can determine the flow table item that the flow table item that current lookup is arrived is matching, just the matching domain field in the flow table item of matching can be revised as new matching domain field.Specific example may refer to the associated description of step S130 and step S150 in above-described embodiment one.
In a kind of possible implementation, the controller receives the mistake instruction that the interchanger is sent, and the mistake indicates to be used to notify the controller flow table modification failure.
Specifically, if the flow table item matched with modification target message is not present in the flow table item that interchanger finds itself storage, controller can receive the mistake instruction of interchanger transmission.Mistake indicate can notification controller flow table modification failure not notification controller flow table modification failure concrete reason, mistake refers to
Show not only to have failed but also the concrete reason of notification controller flow table modification failure in the modification of notification controller flow table.
The flow table amending method of the present embodiment, controller updates flow table list item message by being sent to interchanger, designated switch searches the flow table item matched with target information to be modified in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information of modification flow table says that redundancy is low.
Embodiment 3
Fig. 3 is to be writed a letter to change the flow chart of method according to the flow table of the embodiment of the present invention three.As shown in figure 3, the flow table amending method mainly includes：
Step S310, controller are sent to interchanger updates flow table list item message, indicates that interchanger is modified according to flow table list item message convection current table item matching domain is updated.
Step S330, interchanger are according to renewal flow table list item message, search whether to exist with updating the flow table item that the target information to be modified in flow table list item message matches in the flow table matched is identified with flow table, if existing in the flow table and updating the flow table item that the target information to be modified in flow table list item message matches, step S350 and step S370 is performed;If being not present in the flow table and updating the flow table item that the target information to be modified in flow table list item message matches, step S390 is performed.
The matching domain field of the flow table item of matching is revised as updating the new matching domain field in flow table list item message by step S350, interchanger.
Specifically, controller can make interchanger change flow table item by sending renewal flow table list item message to interchanger.Interchanger is received after renewal flow table list item message, can search whether the flow table item that flow table item is matched with target message to be modified in the flow table matched with flow table mark.Target information to be modified can be flow table relating value, or old matching domain field.The specific example for the flow table item that interchanger is searched in the flow table and target information to be modified matches may refer to the associated description of step S130 in above-described embodiment one.Interchanger is determined after the flow table item of matching, it is possible to by the flow table item of matching
In matching domain field be revised as the new matching domain field.
Step S370, interchanger are matched message with the flow table item after modification, if message is with the flow table item after modification, the match is successful, and the operation in the list item that the match is successful is performed to message.
Step S390, interchanger send mistake to controller and indicated, mistake indicates to be used to notify the controller flow table modification failure.
Specifically, interchanger finds the flow table item itself stored and the flow table item matched with target message to be modified is not present, then interchanger can say that device processed sends mistake instruction to control.The specific associated description that may refer to step S150 in above-described embodiment one.
The flow table amending method of the present embodiment, controller book updates flow table list item message by being sent to interchanger, designated switch searches the flow table item matched with target information to be modified in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.
Embodiment 4
Fig. 4 a are a kind of structured flowchart that device is changed according to the flow table of the embodiment of the present invention four.As shown in fig. 4 a, flow table modification device 400 mainly includes：
Receiving module 410, the renewal flow table list item message for receiving controller transmission, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field.
Specifically, flow table modification device 400 can be interchanger.If receiving module 410 receives the renewal flow table list item message of controller transmission, the flow table item that flow table modification device 400 can be specified to target information to be modified is handled accordingly.Update flow table list item message except being identified including flow table, target information to be modified and new matching domain field, should also include action type.Action type is except that including deleting and increasing, can also include modification.Flow table modification device 400 can identify the flow table for determining to need to change according to flow table, further determined to need the flow table item of modification in the flow table that the needs are changed according to target information to be modified, the flow table item for needing modification is the flow table item matched with target information to be modified, and will need what is changed
Matching domain field in flow table item is revised as new matching domain field.Specific example may refer to the associated description of step S110 in above-described embodiment one.
Searching modul 430, is connected with the receiving module 410, in the flow table corresponding with flow table mark, searching whether there is the flow table item matched with the target information to be modified that the receiving module 410 is received.
Specifically, receiving module 410 is received from controller after renewal flow table list item message, searching modul 430 can identify the flow table for determining to need say modification according to flow table, and further search in the flow table of the needs modification flow table item that whether has flow table item to be matched with target message to be modified.Target information to be modified can be flow table relating value, or old matching domain field book.
In a kind of possible implementation, the target information to be modified is flow table relating value；The searching modul 430 is configured as：In the flow table, judge current lookup to flow table item in flow table relating value whether matched with the flow table relating value that the receiving module 410 is received；If it is determined that current lookup to flow table item in the flow table relating value that is received with the receiving module 410 of flow table relating value match, by the current lookup to flow table item be defined as the flow table item of the matching.Specific example may refer to the associated description of step S130 in above-described embodiment one.
In a kind of possible implementation, the target information to be modified is old matching domain field；The searching modul 430 is configured as：In the flow table, judge current lookup to flow table item in matching domain field whether matched with the old matching domain field that the receiving module 410 is received；If it is determined that current lookup to flow table item in matching domain field match with the old matching domain field that the receiving module 410 is received, by the current lookup to flow table item be defined as the flow table item of the matching.Specific example may refer to the associated description of step S130 in above-described embodiment one.
Modified module 450, it is connected with the searching modul 430, in the case of being found in the searching modul 430 in the presence of the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as the new matching domain field.Specific example may refer to the associated description of step S150 in above-described embodiment one.
Fig. 4 b are another structured flowchart that device 400 is changed according to the flow table of the embodiment of the present invention four, as shown in Figure 4 b, in a kind of possible implementation, the flow table modification device 400 can also include sending module 470, it is connected with the searching modul 430, in the case of being found in the searching modul 430 in the absence of the flow table item matched with the target information to be modified, mistake is sent to the controller to indicate, the mistake indicates to be used to notify the controller flow table modification failure.Specific example may refer to the associated description of step S150 in above-described embodiment one.
The flow table modification device of the present embodiment, connect and receive the renewal flow table list item message that module receives controller transmission, searching modul searches the flow table item matched with target information to be modified in the flow table corresponding with flow table mark, modified module is in the case where searching modul finds and treated the flow table item that book modification target information matches, the matching domain field of the flow table item of matching is revised as new matching domain field, the efficiency high of flow table is changed and alleviates interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.
Embodiment 5
Fig. 5 is the structured flowchart that device is changed according to the flow table of the embodiment of the present invention five.As shown in figure 5, flow table modification device 500 mainly includes：
Sending module 510, flow table list item message is updated for being sent to interchanger, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.Flow table modification device 500 can be controller.Specific example may refer to the associated description of the step S210 in above-described embodiment two.
In a kind of possible implementation, the target information to be modified is flow table relating value or old matching domain field.Specific example may refer to the associated description of step S130 and step S150 in above-described embodiment one.
In a kind of possible implementation, the flow table modification device 500 can also include receiving module
530, indicated for receiving the mistake that the interchanger is sent, the mistake indicates to be used to notify the flow table modification device 500 flow table modification failure.Specific example may refer to the associated description of step S150 in above-described embodiment one.
The flow table modification device of the present embodiment, sending module is sent to interchanger updates flow table list item message, designated switch searches the flow table item matched with target information to be modified in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching domain field, change the efficiency high of flow table and alleviate interface load.In addition say, the mark only pair flow table item matched with target information to be modified is modified, and the information redundancy for changing flow table is low.
The book of embodiment 6
Fig. 6 is the structured flowchart that device 600 is changed according to the flow table of the embodiment of the present invention six.The flow table modification device 600 includes processor (processor) 610, communication interface (communications interface) 620, memory (memory) 630 and bus 640.Wherein, processor 610, communication interface 620 and memory 630 complete mutual communication by bus 640.
Processor 610 is used for configuration processor.Processor 610 is probably a central processor CPU, it may also be made up of a central processor CPU and hardware chip, wherein hardware chip, which can include complexity, can compile standing grain in logical device (complex programmable logic device, CPLD).
Memory 630 can be volatile memory（Volatile memory), such as random access memory (random-access memory, RAM), or nonvolatile memory (non-volatile memory), such as read-only storage (read-only memory,), ROM flash memory (flash memory), hard disk（Hard disk drive, HDD) or solid state hard disc（solid-state drive, SSD).Memory 630 is connected with processor 610.
In a kind of possible implementation, said procedure can be to include the program code of computer-managed instruction.The processor 610 performs following steps according to programmed instruction：
The renewal flow table list item message that controller is sent is received, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field；
In the flow table corresponding with flow table mark, search whether there is the flow table item matched with the target information to be modified；
In the case where there is the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as the new matching domain field.
The flow table modification device of the embodiment of the present invention, flow table list item message is updated by receiving, the flow table item matched with target information to be modified is searched in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching says domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.Book
Embodiment 7
Fig. 7 is the structured flowchart that device 700 is changed according to the flow table of the embodiment of the present invention seven.The flow table modification device 700 includes processor (processor) 710, communication interface（Communications interface) 720, memory (memory) 730 and bus 740.Wherein, processor 710, communication interface 720 and memory 730 complete mutual communication by bus 740.
Processor 710 is used for configuration processor.Processor 710 is probably a central processor CPU, it may also be made up of a central processor CPU and hardware chip, wherein hardware chip, which can include complexity, can compile standing grain in logical device (complex programmable logic device, CPLD).
Memory 730 can be volatile memory（Volatile memory), such as random access memory (random-access memory, RAM), or nonvolatile memory (non-volatile memory), such as read-only storage (read-only memory,), ROM flash memory (flash memory), hard disk（Hard disk drive, HDD) or solid state hard disc（solid-state drive, SSD).Memory 730 is connected with processor 710.
In a kind of possible implementation, said procedure can be to include the program code of computer-managed instruction.The processor 710 performs following steps according to programmed instruction：
Sent to interchanger and update flow table list item message, the renewal flow table list item message includes flow table mark
Knowledge, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.
The flow table modification device of the embodiment of the present invention, flow table list item message is updated by being sent to interchanger, designated switch searches the flow table item matched with target information to be modified in the flow table corresponding with flow table mark, and saying for the flow table item of matching is revised as new matching domain field with domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.Book
Embodiment 8
Fig. 8 is the structured flowchart of the open flows network system according to the embodiment of the present invention eight.As shown in figure 8, the open flows network system mainly includes：Controller 810 and interchanger 830.
The interchanger 830 is using the flow table modification device 600 described in the flow table modification device 400 or embodiment six described in above-described embodiment four;The controller 810 is using the flow table modification device 700 described in the flow table modification device 500 or embodiment seven described in above-described embodiment five.The specific associated description that may refer to above-described embodiment one to seven.
The open flows network system of the present embodiment, interchanger is by receiving the renewal flow table list item message that controller is sent, the flow table item matched with target information to be modified is searched in the flow table corresponding with flow table mark, and the matching domain field of the flow table item of matching is revised as new matching domain field, change the efficiency high of flow table and alleviate interface load.In addition, the mark only pair flow table item matched with target information to be modified is modified, the information redundancy for changing flow table is low.
Those of ordinary skill in the art are it is to be appreciated that each exemplary cell and algorithm steps in embodiment described herein, can be realized with computer software.To a certain extent it is considered that all or part of technical scheme（The part for example contributed to prior art）Embody in form of a computer software product.The computer software product is generally stored inside the storage medium of embodied on computer readable
In, including some instructions are to cause computer equipment（Can be personal computer, server or network equipment etc.）Perform all or part of step of various embodiments of the present invention method.And foregoing storage medium includes USB flash drive（USB flash drive), mobile hard disk, read-only storage（Read-only memory, ROM), it is random that deposit ear memory (random- access memory, RAM), magnetic disc or CD etc. are various again can be with the medium of store program codes.
It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, it is any be familiar with the technology of the art say personnel the invention discloses technical scope in; change can be readily occurred in or substituted, should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.Book
Claims (15)
- Claims1st, a kind of flow table amending method, it is characterised in that including：Interchanger receives the renewal flow table list item message that controller is sent, and the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field；The interchanger searches whether there is the flow table item matched with the target information to be modified in the flow table corresponding with flow table mark；In the case where there is the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as the new matching domain field by the interchanger.2nd, flow table amending method according to claim 1, it is characterised in that the target information to be modified is flow table relating value；The interchanger searches whether there is the flow table item matched with the target information to be modified in the flow table corresponding with flow table mark, including：The interchanger in the flow table, judge current lookup to flow table item in flow table relating value of the flow table relating value with receiving whether match；If current lookup to flow table item in flow table relating value match with the flow table relating value that receives, by the current lookup to flow table item be defined as the flow table item of the matching.3rd, flow table amending method according to claim 1, it is characterised in that the target information to be modified is old matching domain field；The interchanger searches whether there is the flow table item matched with the target information to be modified in the flow table corresponding with flow table mark, including：The interchanger in the flow table, judge current lookup to flow table item in matching domain field whether matched with the old matching domain field；If current lookup to flow table item in matching domain field match with the old matching domain field, by the current lookup to flow table item be defined as the flow table item of the matching.4th, flow table amending method as claimed in any of claims 1 to 3, it is characterised in that in the case of in the absence of the flow table item matched with the target information to be modified, the interchanger to ClaimsThe controller sends mistake and indicated, the mistake indicates to be used to notify the controller flow table modification to lose5th, a kind of flow table amending method, it is characterised in that including：Controller is sent to interchanger updates flow table list item message, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.6th, flow table amending method according to claim 5, it is characterised in that the target information to be modified is flow table relating value or old matching domain field.7th, the flow table amending method according to claim 5 or 6, it is characterised in thatThe controller receives the mistake instruction that the interchanger is sent, and the mistake indicates to be used to notify the controller flow table modification failure.8th, a kind of flow table modification device, it is characterised in that including：Receiving module, the renewal flow table list item message for receiving controller transmission, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field；Searching modul, is connected with the receiving module, in the flow table corresponding with flow table mark, searching whether there is the flow table item matched with the target information to be modified that the receiving module is received；Modified module, is connected with the searching modul, and in the case of being found in the searching modul in the presence of the flow table item matched with the target information to be modified, the matching domain field of the flow table item of the matching is revised as into the new matching domain field.9th, flow table modification device according to claim 8, it is characterised in that the target information to be modified is flow table relating value；The searching modul is configured as：In the flow table, judge current lookup to flow table item in flow table relating value and the reception mould ClaimsWhether the flow table relating value that block is received matches；If it is determined that current lookup to flow table item in the flow table relating value that is received with the receiving module of flow table relating value match, by the current lookup to flow table item be defined as the flow table item of the matching.10th, flow table modification device according to claim 8, it is characterised in that the target information to be modified is old matching domain field；The searching modul is configured as：In the flow table, judge current lookup to flow table item in matching domain field whether matched with the old matching domain field that the receiving module is received；If it is determined that current lookup to flow table item in matching domain field match with the old matching domain field that the receiving module is received, by the current lookup to flow table item be defined as the flow table item of the matching.11st, the flow table modification device according to any one in claim 8 to 10, it is characterised in that the flow table modification device also includes：Sending module, it is connected with the searching modul, in the case of being found in the searching modul in the absence of the flow table item matched with the target information to be modified, send mistake to the controller and indicate, the mistake indicates to be used to notify the controller flow table modification failure.12nd, a kind of flow table modification device, it is characterised in that including：Sending module, flow table list item message is updated for being sent to interchanger, the renewal flow table list item message includes flow table mark, action type, target information to be modified and new matching domain field, the renewal flow table list item message is used to indicate the interchanger in the flow table corresponding with flow table mark, the flow table item matched with the target information to be modified is searched, and the matching domain field of the flow table item of the matching is revised as the new matching domain field.13rd, flow table modification device according to claim 12, it is characterised in that the target information to be modified is flow table relating value or old matching domain field.14th, the flow table modification device according to claim 12 or 13, it is characterised in that the flow table ClaimsModification device also includes：Receiving module, is indicated for receiving the mistake that the interchanger is sent, and the mistake indicates to be used to notify the flow table modification device flow table modification failure.15th, a kind of open flows network system, it is characterised in that including：Interchanger and controller；The interchanger uses the flow table modification device described in any one in claim 8 to 11；The controller uses the flow table modification device described in any one in claim 12 to 14.
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| PCT/CN2014/071264 WO2015109497A1 (en) | 2014-01-23 | 2014-01-23 | Flow table modifying method, flow table modifying device, and openflow network system |
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| WO2015109497A1 (en) | 2015-07-30 |
| RU2652442C2 (en) | 2018-04-26 |
| US20160337228A1 (en) | 2016-11-17 |
| RU2016132459A (en) | 2018-02-08 |
| US10284458B2 (en) | 2019-05-07 |
| CN105247831B (en) | 2018-10-30 |
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